Innovative radio technologies

Innovative radio technologies are the focus of the research groups "RF and Microwave" and "Electronic Measurement and Signal Processing".

From automated to smart connected driving

In order for the autonomous minibuses to be able to handle all driving tasks independently, they have to record their dynamically changing environment with cameras, radar and lidar sensors in order to observe their own movement characteristics as well as those of other road users in real time and translate them into safe driving functions. At present, this measurement technology cannot fully replace human cognitive abilities to comprehend a complex traffic situation. However, if the vehicles are networked with other road users and the traffic infrastructure by means of radio technologies (vehicle-to-everything or V2X communication), safety-relevant information can be exchanged at an early stage, e.g. about unexpectedly occurring dangers with accident potential. This not only increases safety, but also optimizes traffic flow and minimizes particle, noise and field strength emissions.

In order to test such solutions and guarantee their functional safety, networked vehicles would actually have to drive billions of test kilometres before being approved. Since this would require immeasurable resources, approval procedures have switched to scenario-based testing in virtual environments.

Assisstants Andrich and Muhammad

The research groups RF and Microwave and Electronic Measurement and Signal Processing are researching how to virtualize such test drives abd recreate them in the laboratory. Here, too, the digital twin is used.

By means of additionally installed radar sensors, for example, sensor data of the buses are recorded during the journeys and mapped in a special virtual measuring environment. The Virtual Road – Simulation and Test Facility (VISTA), which is unique in Europe, is equipped with an antenna system and comprehensive measurement technology for the virtual verification and validation of automotive radars. For this purpose, the research infrastructure was expanded by a measurement facility for extending the antenna measurement capability into the THz range (mobile radio generation 6G) and for recording bi-static radar cross-sections of mobile objects. Bistatic radar describes the increasingly important case in traffic where a traffic object is illuminated and observed from different directions. Understanding this object-specific angle-dependent wave propagation is one of the basic prerequisites for developing autonomous driving into cooperative driving in intelligently networked safe traffic.